US2803568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of fractionating starch
Assignee: Cooperative Avebe UA
•
Filing: 1952-06-12
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Granted: 1957-08-20
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Expires: 1972-06-12
Abstract
No abstract record available.
Inventors
- 👤 Bus Willem Christiaan
- 👤 Muetgeert Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:22
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A PROCESS OF RECOVERING AMYLOE FROM STARCH COMPRISING THE COOLING OF AN AQUEOUS SOLUTION OF STARCH TO ROOM TEMPERATURE TO EFFECT PRECIPATION OF THE AMYLOSE CONTENT OF SAID STARCH, SAID SOLUTION HAVING BEEN PREPARED BY DISSOLVING STARCH IN THE SOLUTION OF THE BOILING POINT THEREOF, THE IMPROVEMENT COMPRISING THE ADITION TO SAID SOLUTION OF A COMPOUND FROM THE GROUP CONSISTING OF AMYL ALCOHOL, BUTYL ACLOHOL, CAPRYL ALCOHOL, AND DI-ISOPROPYL KETONE, SAID COMPOUND, WHEN AMYL ALCOHOL, BEING PRESENT IN THE SOLUTION FROM 1 TO ABOUT 3.5 COLUME PERCENT, WHEN BUTYL ALCOHOL, BEING PRESENT IN THE SOLUTION IN ABOUT 5 VOLUME PERCENT, WHEN CAPRYL ACOHOL, BEING PRESENT IN THE SOLUTION IN ABOUT 0.025 TO ABOUT 0.050 VOLUME PERCENT, AND WHEN DI-ISOPROPYL KETONE, BEING PRESENT IN THE SOLUTION IN FROM ABOUT 0.4 TO ABOUT 0.8 VOLUME PERCENT.
Claim 2
Dependent Claim
135 words
IN A PROCESS OF RECOVERING AMYLOE FROM STARCH COMPRISING THE COOLING OF AN AQUEOUS SOLUTION OF STARCH TO ROOM TEMPERATURE TO EFFECT PRECIPATION OF THE AMYLOSE CONTENT OF SAID STARCH, SAID SOLUTION HAVING BEEN PREPARED BY DISSOLVING STARCH IN THE SOLUTION OF THE BOILING POINT THEREOF, THE IMPROVEMENT COMPRISING THE ADITION TO SAID SOLUTION OF A COMPOUND FROM THE GROUP CONSISTING OF AMYL ALCOHOL, BUTYL ACLOHOL, CAPRYL ALCOHOL, AND DI-ISOPROPYL KETONE, SAID COMPOUND, WHEN AMYL ALCOHOL, BEING PRESENT IN THE SOLUTION FROM 1 TO ABOUT 3.5 COLUME PERCENT, WHEN BUTYL ALCOHOL, BEING PRESENT IN THE SOLUTION IN ABOUT 5 VOLUME PERCENT, WHEN CAPRYL ACOHOL, BEING PRESENT IN THE SOLUTION IN ABOUT 0.025 TO ABOUT 0.050 VOLUME PERCENT, AND WHEN DI-ISOPROPYL KETONE, BEING PRESENT IN THE SOLUTION IN FROM ABOUT 0.4 TO ABOUT 0.8 VOLUME PERCENT.
References Cited (Backward Citations)
US2515095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |